and we will use the following values for the scattering lengths determined from
\(N\!N\)  data [1]}, [2]}, [3]}, [4]}, [5]}:
\(a_{np} = -23.74 (2) \, \textrm {fm}\,,\qquad a_{nn} = -18.9 (4) \, \textrm {fm}\,,\qquad a_{pp}^C = -7.817 (4) \, \textrm {fm}\,.\) 
